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Groundwater quality
Fitness of subsurface water for use based on its composition and properties.
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PDF Assessing the Vulnerability of Public-Supply Wells to Contamination: Central Valley Aquifer System near Modesto, California [More info]
Using ground-water geochemical analyses, and mathematical models, the factors affecting the quality of public water supply were identified as pumping schedule, screened interval, past land use within the recharge area, and natural geochemical conditions.
PDF Assessing the Vulnerability of Public-Supply Wells to Contamination: Floridan Aquifer System Near Tampa, Florida [More info]
Using ground-water geochemical analyses and mathematical models, the factors affecting the quality of public water supply were identified as mixing of very recent recharge with older water, karst features, natural geochemical processes, and pumping.
Assessing the Vulnerability of Public-Supply Wells to Contamination: Glacial Aquifer System in Woodbury, Connecticut [More info]
Sources and effects of contamination surrounding a single well in western Connecticut
PDF Characterizing contaminant concentrations with depth by using the USGS well profiler in Oklahoma, 2003-9 [More info]
Use of specialized sampling equipment to study public water supply wells, with examples showing Arsenic in two aquifers.
Dissolved solids in basin-fill aquifers and streams in the southwestern United States [More info]
PDF Geochemistry of the Arbuckle-Simpson Aquifer [More info]
Describes the geographic extent, quality, origin, and dynamic character of this aquifer located in south central Oklahoma.
Johnson Creek basin hydrologic monitoring [More info]
Hydrologic data and analyses of surface-water, water quality, and ground water in the Johnson Creek basin in Oregon.
National analysis of trace elements in ground water, streams, stream and reservoir sediment, and fish and clam tissue across the United States [More info]
Trace elements are inorganic chemicals occurring in small amounts in nature. This web site of the National Water Quality Assessment links to U.S. data, publications, news, and other sites on trace metals, metalloids and radionuclides in water.
Nevada Water Science Center Projects [More info]
Links to detailed descriptions of USGS water-related research projects in Nevada with project information, location maps, and bibliographies including online reports.
New Jersey District - ground water information [More info]
Links to New Jersey ground-water data including hydrogeology with a geologic map and description of major aquifers, water levels including real-time data and drought levels, and water-quality information.
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